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Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.

Statement

 Goal

You're the owner of a small business with c amount of clothing items in your inventory, and p customers enter the store during the week.
Each item has a CATEGORY, SIZE, and PRICE.
There is only one of each item and each item can only be used for one order.
Each customer requests a certain CATEGORY of item in their SIZE, and takes the cheapest option if multiple are available. Each customer only has one order.
Input
Line 1: An integer c for the amount of clothing items.
Line 2: An integer p for the amount of customers.
Next c lines: A string item containing the CATEGORY, SIZE, and PRICE of an item separated by a space.
Next p lines: A string order containing the CATEGORY and SIZE of item that they order separated by a space.
Output
p lines: In the order of their requests, the PRICE of the item sold to the customer, or NONE if no item matched their order.
Constraints
p > 0
Example
Input
3
2
JEANS LARGE 30
SHIRT SMALL 15
JACKET LARGE 20
JEANS LARGE
JACKET LARGE
Output
30
20

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